LG -V909DW Service Manual page 155

Power keys & DCDC's
SW500
1
2
V_POWERRAIL
PG_VDDIO_SYS
VDD_1V2
L507 2.2u
1.0mm
5V (HDMI & USB HOST)
V_POWERRAIL
4
EN
VDD_5V0_EN
3
VIN
LGE Internal Use Only
Power On/Off
Reset
VDD_V2V2
VDD_V2V2
AP_ONKEY
R502
R507
D
10K
C501 470n
HOT_RST_N VDD_V2V2
3 1M
R505 100K
C505
0.1u
S
4
R512 D510 Q500
D
100K
G
ONKEY_N
Q501
C506 S
0.1u
1.2V/1.8V
V_LDO4_1V8
U506
1 12
FB2 FB1
2 11
EN2 EN1
3 10
AVIN PGOOD VDD_1V8
1.0mm
4 9
SW2 VIN
L508 2.2u
5 8
C537 AGND SW1
6 1.0mm
1u 1.0mm
PGND
13 7
T_GND _FPWM C538
10u
0.7mm
D500
VDD_5V0
L500 4.7u
Q502
1.0mm
U501
1 6 1
VOUT
VIN SW
2 5 2
GND R531
VOUT GND VDD_3V3_ALWAYS_EN
4 3
_SHDN FB
close to FB
WLED Driver for 8.9" LCD
V_POWERRAIL
D503
1.5mm
L502 15u
C513
39p
VDD_5V0_HDMI
RESUME
G
TEMP_THERM_N
C4
VDDIO
D2
VSYNC
C2
FILTER
A5
FB
B3
R517 18K
ISET
B4 E5
U504
FSET OUT1 WLED1
D5
OUT2 WLED2
D3 C5
SCLK OUT3
WLED3
D4 E3
SDA OUT4 WLED4
E2
OUT5
A4 E1
TP502
LCD_PWM PWM OUT6
TP505 A3
EN
WLED_EN
C3
TP501 FAULT
3.3V
VDD_3V3
V_POWERRAIL
C500 220p
1M
4
FB
12 2.0mm R501
VP1
11 15 L501 2.2u
VP2 LX1
10 14
VP3 LX2
13
LX3
C534
7
EN
VDD_3V3_EN 22u
9 U500 16
VCC NC3
C504 6 3
NC1 PGND1
8 2
NC2 PGND2
10u
1
PGND3
5
SGND
17
EXPOSED_GND
3.3V (Always)
V_POWERRAIL VDD_3V3_ALWAYS
U502
4 1
VDD VOUT
3 2
VDD_3V3_ALWAYS_EN_1 CE GND
C551
C552
1u
0
VDD_3V3_ALWAYS_EN_1 1u
- 155 -
CAMERA PMIC
V_POWERRAIL
VDD_WLED
1.0mm
C507
C508 C509 C510
C514
10u
4.7u 2.2u 2.2u 2.2u
E4 B4
VINB LDO1
D2
FB
E3
SW
D4
GNDB
A3
LDO2
B3
IRQ_N
C4 A1
CAM_I2C_SDA
SDA LDO3
C3
CAM_I2C_SCL SCL U503
D3
DVS
E2
CAM_EN EN
C1
LDO4
B2
DEFSEL
C2 E1
IDSEL LDO5
CAMERA FLASH LED DRIVER
V_POWERRAIL
1%
U505
1 14
R522 200K
CT RSET
2 13 0.5 mm
FLASH_LED_TORCH
EN_SET FLOUTA
3 12
FLASH_LED_EN 0.5 mm
FLEN FLGND
4 11
AGND FLOUTB
5 10
IN FLINH
6 9
LX GND
7 8
PGND OUT
Copyright © 2011 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
V_GM_2V8
C549 2.2u
C545 4.7u
C517 1u
V_DE_2V7
C550 2.2u
C546 4.7u
C522 1u
V_IO_1V8
C547 4.7u
C525 1u
V_DI_1V2
C548 4.7u
C528 1u
Flash Mode : 810mA
Movie Mode : 111mA
CAMERA FLASH LED
Routing line must be thick enough to support 1A!!
cathode
1.0 mm
FLASH_C
GSM_TXON_IND
R523 0
FLASH_LED_INH
FLASH_A
1.0 mm
anode
Only for training and service purposes